GIGABYTE X870 AORUS STEALTH ICE ATXマザーボード ホワイト X870 A STEALTH ICE MB6786

This article covers GIGABYTE X870 AORUS STEALTH ICE ATXマザーボード ホワイト X870 A STEALTH ICE MB6786.

Overview

GIGABYTE's X870 AORUS STEALTH ICE (model MB6786) is an ATX motherboard designed around the AMD X870 chipset, featuring a distinctive white color scheme and a back-connect layout that routes all cables to the rear of the board for a clean, clutter-free front face. It supports Socket AM5 CPUs including AMD Ryzen 9000, 8000, and 7000 series processors, and provides four DDR5 memory slots allowing up to 256GB. The board includes one PCIe 5.0 x16 slot, one PCIe 4.0 x4 slot, and four M.2 slots (two running at PCIe 5.0, two at PCIe 4.0), plus two SATA3 ports. With a 16+2+2 digital VRM phase design, large heatsinks, and M.2 Thermal Guard L, it targets high-end builds that prioritize both aesthetics and performance.

Compatibility Guide

The X870 AORUS STEALTH ICE is built for Socket AM5, so it works with AMD Ryzen 7000, 8000, and 9000 series CPUs. It supports DDR5 memory only (EXPO profiles). The standard ATX form factor (305×244 mm) fits most ATX cases, but because of the back-connect design, you’ll need a case that specifically supports rear cable routing (such as GIGABYTE C300G STEALTH or other “back‑connect compatible” cases). The single PCIe 5.0 x16 slot is ready for the latest graphics cards, and the four M.2 slots accept NVMe SSDs up to Gen5. Power connections require a standard 24-pin ATX and 8-pin EPS (12V) connector.

Product Info

The X870 AORUS STEALTH ICE launched in mid‑2025 as part of GIGABYTE’s STEALTH line. It carries a real‑world price around ¥52,000 retail and comes with a 3-year warranty through authorized Japanese distributors. Market positioning is high‑end: the back‑connect design, white aesthetic, robust VRM (16+2+2 digital phases), and 5GbE LAN + Wi‑Fi place it squarely at enthusiasts who want both looks and power. Onboard Realtek ALC1220 audio rounds out the premium feature set.

Best Use Cases

Clean aesthetic PC builds: The white PCB and back‑connect design eliminate visible front cables, making the system ideal for users who display their PC through a tempered glass side panel. High‑performance gaming: Pair it with a Ryzen 9 7950X or 9950X and a PCIe 5.0 graphics card for top‑tier frame rates, while the four M.2 slots allow multiple Gen5 SSDs for fast game loading. * Creative workstation: With up to 256GB of DDR5 memory and four NVMe slots, this board handles video editing, 3D rendering, and large datasets without storage bottlenecks.

Things to Consider

Because the board uses a back‑connect layout, you must ensure your case specifically supports rear cable routing; otherwise, the aesthetic advantage is lost and cable management may be tricky. The color is white, but the VRM heatsinks and other metal parts are more silver than pure white, which could clash with other components if you demand an exact white tone. The X870 chipset offers fewer PCIe lanes than the X870E/X670E flagships — if you need multiple high‑bandwidth PCIe 5.0 devices, consider stepping up to a higher‑tier chipset. Finally, the price on this board is competitive with X670E models, so weigh the value of the back‑connect feature against conventional layout boards that may offer more PCIe connectivity.